OpenCode - LightOn Developers

Prerequisites

OpenCode installed
A LightOn API key from the LightOn Console

Configuration

OpenCode configures MCP servers via a JSON file. Add the following to ~/.config/opencode/opencode.jsonc:

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "lighton": {
      "type": "remote",
      "url": "https://api.lighton.ai/mcp",
      "enabled": true,
      "oauth": false,
      "headers": {
        "Authorization": "Bearer {env:LIGHTON_API_KEY}"
      }
    }
  }
}

{env:LIGHTON_API_KEY} is OpenCode’s syntax for reading an environment variable at runtime. The key is never stored in the config file. Make sure LIGHTON_API_KEY is set in your shell environment, you can grab your key from the LightOn Console. To scope the server to a single project instead, place the same snippet in opencode.jsonc at the root of your project.

Verification

List all configured MCP servers:
opencode mcp list
Confirm lighton appears and shows as authenticated.

Test the connection with a prompt like:

Search my LightOn workspaces for documents about [topic]

You’re all set. From any OpenCode session you can now ask it to search or ingest documents in your LightOn workspaces directly.

References

OpenCode docs: MCP Servers

Mistral Vibe Cursor

⌘I

​Prerequisites

​Configuration

​Verification

​References

Prerequisites

Configuration

Verification

References